Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace CHM 204 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

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Move as fast as possible and starting with questions that don’t have calculation first to save time

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70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

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Created on June 21, 2024 By

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CHM 204

1 / 40

1. The following terms can be used to describe cellulose except ____

A. Polysaccharide

B. Polymer

C. Biomass

D. Bioenzyme

2 / 40

2. The general reaction of the carbonyl groups?

A. electrophilic addition

B. electrophilic substitution

C. nucleophilic substitution

D. nucleophilic addition

3 / 40

3. A positive test to Benedict’s reagent is indicated by ___

A. Brick-red to brown

B. Blue to brick-red

C. Brick-red to blue

D. Brown to blue

4 / 40

The benzenoid hydrocarbons in which two or more benzene rings are fused together at ortho position in such a way that each pair of rings shares rings shares two carbons are called ---------- benzenoid hydrocarbon.

A. All the options

B. Condensed

C. None of the options

D. Isolated

5 / 40

5. Beside peptide bond,what other covalent bonds are commonly found in peptides ?

A. hydrogen bond

B. disulfide bond

C. ether bond

D. hndrophobic bond

6 / 40

6. The product of fermentation of cassava is ____

A. carboxylic acid

B. Alcohol

C. ketone

D. Aldehyde

7 / 40

The substitution of an acyl group into an aromatic ring by the reaction with an acid chloride in the presence of Lewis acid is called ____________

A. Hydrogenation

B. Friedel - Craft akylation

C. Hyperconjugation

D. Friedel - Craft acylation

8 / 40

8. The boiling point of tertiary butanol is 65degreeC whereas that of normal butanol is 88degreeC, the difference in there b.p is due to ___

A. nucleophilicity

B. isomerism

C. hydrogen bonding

D. resonance

9 / 40

9. Alcohol can be concentrated by ?____

A. treatment of the product with dehydrating agent and filtration

B. by boiling the product

C. distillation of product with benzene

D. distillation of the product

10 / 40

10. An equilibrium mixture of ethanol and water boils at?

A. 68 and 98) degree C

B. 68 degree C

C. 90 degree C

D. 78 and 100) degree C

11 / 40

11. The enzyme responsible for fermentation of bread in yeast is ?

A. Ketose

B. Yeastose

C. Zylose

D. Zymase

12 / 40

12. The most widely used method for the preparation of alkyl halides is from __________

A. Alkanes

B. Alcohol

C. Alekenes

D. Grignard Reagent

13 / 40

13. The reaction of benzene with propanoyl chloride in the presence of Aluminum chloride will yeild _____

A. Phenyl acetone

B. Phenyl propyl ketone

C. Phenyl methyl ketone

D. Acetophenone

14 / 40

14.

A benzenoid hydrocarbon in which two benzene rings are fused together at the ortho position is called ____________

A. Naphthalene

B. Biphenyl

C. Phenanthrene

D. Anthracene

15 / 40

15.

Hydrogenation of benzene at higher temperature and under pressure yields ________

A. Cyclohexyne

B. Benzaldehyde

C. Cyclohexane

D. Cyclohexene

16 / 40

16. Which of these functional group Is not found in the structure of urea ?

A. Carbon2I

B. Amide

C. Hydroxyl

D. Thiol

17 / 40

17. Saponification reaction is best described as _____

A. Acid promoted hydrolysis reaction

B. Base promoted hydrolysis reaction

C. Soap making reaction

D. Condensation reaction

18 / 40

18.

Ethane is sp3 hybridized molecules and has ---- bond angle

A. 190.5 degrees

B. 90.5 degrees

C. 45.5 degrees

D. 120.5degrees

19 / 40

19.

CH3COCH3 stands for ------

A. Ketone

B. Ester

C. Aldehyde

D. Acid

20 / 40

20. Ketones are less susceptible to nucleophilic attack than aldehydes because ____?

A. Ketones are less stable than aldehydes

B. The steric hinderance of the alkyl group of ketones may affect their reactivity

C. Aldehydes are more stable than ketones

D. ketones are more reactive

21 / 40

21.

The stronger an acid the ___________ is its conjugate base

A. Both have no correlation

B. Weaker

C. Stronger

D. None of the options

22 / 40

22. Which of the following is a primary Amine ?

A. N-methyl phenlyl amine

B. N-ethyl, N Methylamine

C. 1,3 Pentane diamine

D. Triethylamine

23 / 40

23.

In the hybrids orbitals, as the s character increase, bond length -------

A. Stabilize

B. Weakens

C. Increase

D. Decrease

24 / 40

24. CH3CH2CH2.C(CH3)2.OH is ?

A. 2,2-dimethyl-2-butanol

B. 2,2-dimethyl-1-pentanol

C. 2-methyl-1-butan-1-ol

D. 2,2-dimethyl-1-butanol

25 / 40

25.

Ar-OH stands for ------- functional group

A. Aldehyde

B. Ester

C. Phenol

D. Ketone

26 / 40

26. An example of Isolated Benzenoid Hydrocarbon is __________

A. Phenatrene

B. Biphenyl

C. Naphthalene

D. Anthracene

27 / 40

27. The process by which benzene and its derivatives are extracted from petroleum is called ___________

A. Cracking

B. Aromatization

C. Hydroforming

D. Polymerization

28 / 40

28. Iodoform is easily recognized by?

A. it’s urine smell

B. it’s ammonia smell and green colour

C. It’s ether smell and blue colour

D. it’s medicinal smell and yellow colour

29 / 40

29. An oil sample high in 9,12,15 octadecentrienic acid _____

A. useful in the manufacture of margarine

B. likely not to be reactive with iodine

C. likely to be highly saturated

D. useful in the manufacture of paints

30 / 40

30. Which of the following is the formula for Hydroxylamine ?

A. CH2.OH

B. CH3.NH2.OH

C. C6.H5.NH-OH

D. H2.N.OH

31 / 40

31. Which of the following statements is incorrect?

A. Aliphatic alcohols are less acidic than phenols

B. Alcohol can be prepared by addition of water to double bonds

C. Alcohol can be prepared from the reduction of esters

D. Methanol is also called wood alcohol

32 / 40

32. Sulphonation of benzene yields ___________

A. Auto sulphur benzene

B. Sulphric acid

C. Para sulphur benzene

D. Sulphonic acid

33 / 40

33. The gas produced when sodium metal is dropped in ethanol _____

A. N2

B. O2

C. CO2

D. H2

34 / 40

34.

Diethylether is correctly represented by the formula

A. CH3CH2CH3CH2

B. CH3OCH2CH3

C. CH3CH2OCH2CH3

D. CH3OCH3

35 / 40

35. Which general class of compounds does amine belong?

A. Propanol amine

B. Acetamide

C. Nitrile

D. Nitro amine

36 / 40

36.

) [CH3Co]20 is ______

A. An anhydride

B. An ether

C. Dicarboxylic acid

D. An amide

37 / 40

37. The following will turn blue black with iodine except ____

A. Guinea corn

B. Garri

C. Pupuru

D. Groundnut

38 / 40

38. There are ---------- resonance structures of benzene

A. 3

B. 4

C. 5

D. 2

39 / 40

39.

RNH2 stands for class of compound called --------

A. Esters

B. Amines

C. Aromatics

D. Amides

40 / 40

40. Which pair of reactants below will react to produce an acetal ?

A. ketone + alcohol

B. acid + acetone

C. alcohol + aldehydes

D. primary aldehyde + ketone

Your score is

The average score is 39%

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